OpENer CIP Integer Overflow — CVE-2026-51536
ID: ab067810-644a-5c99-a64b-48adfd19b59e
STIX ID: report--ab067810-644a-5c99-a64b-48adfd19b59e
Feed Name: CosmicBytez Labs
Threat Score
A critical integer truncation vulnerability (CVE-2026-51536, CVSS 9.1) in EIPStackGroup OpENer 2.3.0 allows unauthenticated network attackers to send malformed CIP packets (port 44818) that can cause heap corruption or denial-of-service in EtherNet/IP/PLC/OT devices; vendors should apply patches, segment networks, monitor CIP traffic, and restrict access.
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